Paul suggests this method for preparing zinc nitrate. Paul’s method will not make a pure dry sample of zinc nitrate. What improvements should Paul make to the method to make sure that: 4. the reaction is complete 5. the zinc nitrate can be separated from the nitric acid and the zinc oxide? Explain your answer. – 7561

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1. I would add extra zinc oxide so that all the nitric acid reacts.
   Then I would filter the mixture to remove any zinc oxide left over.
   Next, I would heat the solution gently to evaporate some of the water.
   Finally, I would leave it to cool so crystals can form.

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